jones



-height and Width as will impart I UNITED y STATES JONATHAN L. rONEs, or sT. Louis, MISSOURI'LASSIGNOR TOHIMSELFAND W. D. PORTER.

xMPRovED DEFENSNE ARMORFOR wATERANDiAND BATTERIES:

To all whom it may. concern.

Bit known that I, JONATHAN L. JONES, of St.' Louis, in the State of Missouri, have invented 'a' new and useful Compound Casemate forVVarL Vessels and other War Structures; and I do `hereby declare that the following is a full,

clear, and'exact description of the same, ret'-l erence being had to the `accompanying drawings, forming part ot' this specification, .in Which-` Figure l. is a perspectivej'view ofa portion of a ship casemated according to my'invention, Fig. 2 is an exterior View of the same.

. Fig. 3 is a horizontal section ofthe same; Fig.

4 is a perspective View of one of the plates of metal; Figs. 5 and 6, iodicat'ons of the im provenient. f

Similar letters of reference in the several figures indicate corresponding parts.

The nature of my invention consists in a novel manner of constructing and applying the plating to casemates of War-vessels and other war structures; also, in a novel manner` of combining elastic cushions with this novel arrangement of plating and with the bolts which hold the parts of the casemate together.

y To enable Others skilled in the art to make Y and use my invention, I will proceed to describe the, same withv reference to the drawings.

A B are metal plates with narrow ribs a a.

lb b', extending at right anglesout-from one of their faces. These .plates may be of any required thickness, and their ribsfof such great strength and rigidity to the plates. The length of the plates may be such as the structure to which they are applied may require. So, also, may the width of the plates be deternr'iined.` Each plate has four ribs, one at each edge and two .near the center. This number may be increased, it it is necessary, to give greater strength and rigidity to the plates. The ribs, it. increased in number, must or ought to at least bedisposed so as to Operate as illustratedin the drawings. The angle-plates are all alike and can be produced on the sameV rolling-mill, and by their construction give a greater strength than any other plan used in constructing casemates, thus enabling me to reduce the Weight of materials in a ship or boat of a given size and strength-a very im- Specification forming part of Letters Patent No. 35,001", dated April 15', .1862.v

They. also assist in forming a continuous fastening z betweentlie inner andouter tiers of plating Aused in Aform` 'ing 'theucasernate 'by means of their: angles" or` ribs'. They v furtherybytheir ribs,A form. chambersor chan-nels'to'.receivefelastic cush-y ionsvof rubber, cork-,orjother suitable ina-y "terial whichl is-u'sed betweenthe plates for' `the purpose of saving'the casema-te from the injurious eiectsofy sudden concussion ofthe yball and 'the plates# As the penetration of iron by cannon balls involves the same mechanicalprinciple of operationas the ordi-lr nary punching-machine, the ball performs the same-office that the nipple' of the punching? machine does. Therefore, as kit is a Wellknown fact among mechanics that'as long as th'edie of the machine remains rigid and unyielding, the nipple passes through the sheet of iron with apparent ease; butif some elastic sub-`v stance vis introduced between the bottom of the die, or the bed-plate of the machine'al-jll `low-ed to spring, itis almost van impossibility to make the nipple of the-punch penetrate the iron sheet. Itfollows that greatadvantage will be derived fromv any'good and prac'- ticable mode of arresting the progress of a cannon-ball-through the casemate o f a ship or other War structure on the same principle.

The use Of an elastic cushion'in thecase 'of a punch causesthe punchto glance-oft fonrthe object with Whiclrit comesinfcontact, and the result must be the same it a similar cushion? is used in'a War structure when a ball strikes the plating of the casemate. The angle-plates A lare applied toa casemate C by rst applying an elastic cushion'D to the Outer surface of the' casemate, andthen' setting the plain sides of the plates A'against this cushion, the edges of `the plates adjojn# ing closely one another. Strips of rubber'E or metallic springs or cork, or -an y other yield# ling substance, are now placed against the ribbed sides of the plates A, they being'set snugly in the chambers or channels formed bythe ribs a c. A second tier ot plates -B-s arenow set against the rubber cushions E,

the edge ribs b of said plates entering bc-v .tween` the central ribs a Ot the plates A,l and the edge ribs a of the plates A being in'closed by the central ribs b of the plates B, thus 

